A children's indoor playground in the Netherlands is about to cut the ribbon on a massive kinetic attraction. The man behind it is Jelle Bakker, a/k/a the Marble Master, who has created a "Marble Tsunami" marble run that handles 11,000 of the orbs at once.

Bakker has autism—"There's a long description of my autism [written in Dutch], but it's too long to translate," he writes—but whatever the specifics, it has perhaps helped him to focus on creating such a massive machine in a relatively short amount of time; he began building it on April 20th of this year, just over a month ago, and the video you see here went live just yesterday.

When building his machines, Bakker likes to pay attention to the sounds the marbles make as they strike the various chimes, bells and obstacles he places in their path. "My Marble Machines differs from other ones because of a cacophony of sounds produced from the marbles and moving parts like tipovers, seesaws, levers and unique track parts like jumps, loops, funnels, pinball courses and more," he writes.

Nevertheless, he knows this one will have to be aurally toned down for the kids. "The sound is deafening," he admits. "Because of the noise, it will be equipped with noise damping housing and glass panels on the front."

Bakker's currently fine-tuning the Tsunami, but he expects that in a matter of days, kids at the Monkey Town playground in Gouda, Holland will get to interact with his masterpiece.